Douglas Gregor | 4186ff4 | 2010-05-20 23:20:59 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | |
| 3 | // <rdar://problem/7971948> |
| 4 | struct A {}; |
| 5 | struct B { |
Douglas Gregor | 662a482 | 2010-12-23 22:56:40 +0000 | [diff] [blame] | 6 | void foo(int b) { |
Douglas Gregor | 4186ff4 | 2010-05-20 23:20:59 +0000 | [diff] [blame] | 7 | switch (a) { // expected-error{{use of undeclared identifier 'a'}} |
| 8 | default: |
| 9 | return; |
| 10 | } |
Douglas Gregor | 662a482 | 2010-12-23 22:56:40 +0000 | [diff] [blame] | 11 | |
| 12 | switch (b) { |
| 13 | case 17 // expected-error{{expected ':' after 'case'}} |
| 14 | break; |
| 15 | |
| 16 | default // expected-error{{expected ':' after 'default'}} |
| 17 | return; |
| 18 | } |
Douglas Gregor | 4186ff4 | 2010-05-20 23:20:59 +0000 | [diff] [blame] | 19 | } |
John McCall | f6a3ab0 | 2011-01-22 09:28:32 +0000 | [diff] [blame] | 20 | |
| 21 | void test2() { |
| 22 | enum X { Xa, Xb } x; |
| 23 | |
| 24 | switch (x) { // expected-warning {{enumeration value 'Xb' not handled in switch}} |
| 25 | case Xa; // expected-error {{expected ':' after 'case'}} |
| 26 | break; |
| 27 | } |
| 28 | |
| 29 | switch (x) { |
| 30 | default; // expected-error {{expected ':' after 'default'}} |
| 31 | break; |
| 32 | } |
| 33 | } |
Richard Trieu | bb9b80c | 2011-04-21 21:44:26 +0000 | [diff] [blame] | 34 | |
| 35 | int test3(int i) { |
| 36 | switch (i) { |
| 37 | case 1: return 0; |
| 38 | 2: return 1; // expected-error {{expected 'case' keyword before expression}} |
| 39 | default: return 5; |
| 40 | } |
| 41 | } |
Douglas Gregor | 4186ff4 | 2010-05-20 23:20:59 +0000 | [diff] [blame] | 42 | }; |
Richard Trieu | bb9b80c | 2011-04-21 21:44:26 +0000 | [diff] [blame] | 43 | |
| 44 | int test4(int i) { |
| 45 | switch (i) |
| 46 | 1: return -1; // expected-error {{expected 'case' keyword before expression}} |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | int test5(int i) { |
| 51 | switch (i) { |
| 52 | case 1: case 2: case 3: return 1; |
| 53 | { |
| 54 | 4:5:6:7: return 2; // expected-error 4{{expected 'case' keyword before expression}} |
| 55 | } |
| 56 | default: return -1; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | int test6(int i) { |
| 61 | switch (i) { |
| 62 | case 1: |
| 63 | case 4: |
| 64 | // This class provides extra single colon tokens. Make sure no |
| 65 | // errors are seen here. |
| 66 | class foo{ |
| 67 | public: |
| 68 | protected: |
| 69 | private: |
| 70 | }; |
| 71 | case 2: |
| 72 | 5: // expected-error {{expected 'case' keyword before expression}} |
| 73 | default: return 1; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | int test7(int i) { |
| 78 | switch (i) { |
| 79 | case false ? 1 : 2: |
| 80 | true ? 1 : 2: // expected-error {{expected 'case' keyword before expression}} |
| 81 | case 10: |
Chandler Carruth | 5440bfa | 2011-08-18 02:04:29 +0000 | [diff] [blame] | 82 | 14 ? 3 : 4; // expected-warning {{expression result unused}} |
Richard Trieu | bb9b80c | 2011-04-21 21:44:26 +0000 | [diff] [blame] | 83 | default: |
| 84 | return 1; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | enum foo { A, B, C}; |
| 89 | int test8( foo x ) { |
| 90 | switch (x) { |
| 91 | A: return 0; // FIXME: give a warning for unused labels that could also be |
| 92 | // a case expression. |
| 93 | default: return 1; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | // Stress test to make sure Clang doesn't crash. |
Kaelyn Uhrain | b5c7768 | 2013-10-19 00:05:00 +0000 | [diff] [blame] | 98 | void test9(int x) { // expected-note {{'x' declared here}} |
Richard Trieu | bb9b80c | 2011-04-21 21:44:26 +0000 | [diff] [blame] | 99 | switch(x) { |
| 100 | case 1: return; |
| 101 | 2: case; // expected-error {{expected 'case' keyword before expression}} \ |
| 102 | expected-error {{expected expression}} |
| 103 | 4:5:6: return; // expected-error 3{{expected 'case' keyword before expression}} |
| 104 | 7: :x; // expected-error {{expected 'case' keyword before expression}} \ |
| 105 | expected-error {{expected expression}} |
| 106 | 8:: x; // expected-error {{expected ';' after expression}} \ |
Kaelyn Uhrain | b5c7768 | 2013-10-19 00:05:00 +0000 | [diff] [blame] | 107 | expected-error {{no member named 'x' in the global namespace; did you mean simply 'x'?}} \ |
| 108 | expected-warning 2 {{expression result unused}} |
Richard Trieu | bb9b80c | 2011-04-21 21:44:26 +0000 | [diff] [blame] | 109 | 9:: :y; // expected-error {{expected ';' after expression}} \ |
| 110 | expected-error {{expected unqualified-id}} \ |
| 111 | expected-warning {{expression result unused}} |
| 112 | :; // expected-error {{expected expression}} |
| 113 | ::; // expected-error {{expected unqualified-id}} |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | void test10(int x) { |
| 118 | switch (x) { |
| 119 | case 1: { |
| 120 | struct Inner { |
| 121 | void g(int y) { |
| 122 | 2: y++; // expected-error {{expected ';' after expression}} \ |
| 123 | // expected-warning {{expression result unused}} |
| 124 | } |
| 125 | }; |
| 126 | break; |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | template<typename T> |
| 132 | struct test11 { |
| 133 | enum { E }; |
| 134 | |
| 135 | void f(int x) { |
| 136 | switch (x) { |
| 137 | E: break; // FIXME: give a 'case' fix-it for unused labels that |
| 138 | // could also be an expression an a case label. |
| 139 | E+1: break; // expected-error {{expected 'case' keyword before expression}} |
| 140 | } |
| 141 | } |
| 142 | }; |
| 143 | |
| 144 | void test12(int x) { |
| 145 | switch (x) { |
| 146 | 0: // expected-error {{expected 'case' keyword before expression}} |
| 147 | while (x) { |
| 148 | 1: // expected-error {{expected 'case' keyword before expression}} |
| 149 | for (;x;) { |
| 150 | 2: // expected-error {{expected 'case' keyword before expression}} |
| 151 | if (x > 0) { |
| 152 | 3: // expected-error {{expected 'case' keyword before expression}} |
| 153 | --x; |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | } |
David Majnemer | 0e1e69c | 2011-06-13 05:50:12 +0000 | [diff] [blame] | 159 | |
| 160 | void missing_statement_case(int x) { |
| 161 | switch (x) { |
| 162 | case 1: |
| 163 | case 0: // expected-error {{label at end of compound statement: expected statement}} |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | void missing_statement_default(int x) { |
| 168 | switch (x) { |
| 169 | case 0: |
| 170 | default: // expected-error {{label at end of compound statement: expected statement}} |
| 171 | } |
| 172 | } |